A system design for cooling oil temperature of ultra-high voltage transformer using phase change materials

Abstract

The present invention belongs to the technical field of transformer oil temperature control, and specifically relates to a system design for cooling the oil temperature of an ultra-high voltage transformer using phase change materials, comprising a main component, wherein the main component comprises the transformer as a whole, the inner cavity of the transformer as a whole is provided with a heat exchange component, the outer side of the heat exchange component is connected to a heat dissipation component; and a temperature control component, wherein the temperature control component comprises an integral component connected to the outer side of the heat dissipation component, and the top of the integral component is connected to a lifting component. When in use, the invention can continuously cool the oil inside the transformer through the phase change material to ensure the stable operation of the transformer, and in cold weather, heat the phase change material, thereby heating the interior of the transformer, to prevent damage to the internal components of the transformer due to excessively low temperatures. At the same time, it can also provide certain protection for the integral component to prevent external substances from damaging the pipelines on the integral component.

Description

Technical Field

[0001] The present invention belongs to the technical field of transformer oil temperature control, and in particular relates to a system design for cooling the oil temperature of an ultra-high voltage transformer by using phase change materials. Background Art

[0002] In power systems, ultra-high voltage transformers are key equipment for power conversion and transmission. Their operating efficiency and reliability are directly related to the safety and stability of the entire power grid. Transformers generate significant heat during operation, primarily from losses in the windings and core. If this heat cannot be dissipated promptly, it can cause the transformer oil temperature to rise, accelerate the aging of insulation materials, and in severe cases, even damage the transformer, leading to power outages.

[0003] Existing transformer cooling methods, such as oil-immersed self-cooling and forced oil circulation air cooling, can effectively dissipate heat to a certain extent, but they have problems such as low automation, high energy consumption, and complex maintenance.

[0004] Secondly, in cold regions and weather conditions, low transformer temperatures can also present a host of problems. Low temperatures can cause the insulation material within the transformer to harden and become brittle, reducing its insulation performance and increasing the risk of short-circuit accidents in the power system. Furthermore, excessively low oil temperatures can affect the fluidity of the transformer oil, further compromising its heat dissipation effectiveness. Therefore, ensuring proper heat dissipation while effectively coping with low-temperature environments has become a pressing issue in transformer cooling system design. Summary of the Invention

[0005] The purpose of the present invention is to provide a system design for cooling the oil temperature of an ultra-high voltage transformer using phase change materials. During use, the oil inside the transformer can be continuously cooled by the phase change material to ensure stable operation of the transformer. In cold weather, the phase change material is heated, thereby heating the interior of the transformer to prevent damage to the internal components of the transformer due to excessively low temperatures. At the same time, the overall assembly can be protected to a certain extent to prevent damage to the pipelines on the overall assembly by external substances.

[0006] The technical solutions adopted by the present invention are as follows:

[0007] A system design for cooling the oil temperature of an ultra-high voltage transformer using phase change materials includes a main body component, the main body component includes a transformer as a whole, a heat exchange component is provided in the inner cavity of the transformer as a whole, and a heat dissipation component is connected to the outer side of the heat exchange component;

[0008] A temperature control assembly, the temperature control assembly comprising an integral assembly connected to the outside of the heat dissipation assembly, the top of the integral assembly being connected to a lifting assembly;

[0009] The overall assembly is divided into two groups of states. In the first state, the transformer as a whole operates normally, the heat exchange assembly absorbs heat and transfers it to the heat dissipation assembly, and the heat is dissipated through the overall assembly.

[0010] In the second state: when the weather is cold, the lifting assembly switches the entire assembly to the second state, the entire assembly absorbs heat, and introduces the heat into the entire transformer through the heat exchange assembly.

[0011] In a preferred embodiment, the transformer as a whole comprises a body, a housing is fixedly connected to the bottom of the inner cavity of the body, and first heat conducting plates are fixedly connected to both the front and rear sides of the inner cavity of the housing.

[0012] In a preferred embodiment, the heat exchange assembly includes a movable tube movably inserted in the outer groove of the first heat conduction plate, the movable tube is connected to a accommodating tube on the side facing the middle of the inner cavity of the machine body, the outer ring of the accommodating tube is movably inserted in the outer groove of the first heat conduction plate, and the upper and lower sides of the movable tube facing the outer side of the machine body are fixedly connected with push plates, and the upper and lower sides of the left and right sides of the machine body are provided with through grooves, and the push plates are slidably connected in the through grooves, and hydraulic rods are fixedly installed on the upper and lower sides of the outer side of the machine body, and the output end of the hydraulic rod is fixedly connected to the inner cavity of the push plate.

[0013] In a preferred embodiment, the movable tube and its matching accommodating tube and push plate are provided in two groups, distributed on the left and right sides of the inner cavity of the machine body, and the accommodating tubes on both sides are cross-distributed and evenly sleeved in the outer groove of the first heat conducting plate.

[0014] In a preferred embodiment, the heat dissipation assembly includes a feed pipe connected to the upper and lower sides of the body, and the front and rear sides of the inner cavity of the body are fixedly connected to a thermal conductive cover, and the middle part of the thermal conductive cover is fixedly connected to a second heat conducting plate, and the second heat conducting plate is in contact with the outer ring of the containing tube.

[0015] In a preferred embodiment, the overall assembly includes a collecting hood connected to the outer end of the feed pipe, and the adjacent sides of the upper and lower groups of collecting hoods are connected to heat pipes. The inner ring of the collecting hood located at the bottom is provided with a U-shaped groove, and the inside of the U-shaped groove is slidably connected to a heat absorbing plate.

[0016] In a preferred embodiment, the lifting assembly includes a bracket fixedly connected to the top surface of the collecting cover located above, the inner cavity of the bracket is hinged with a storage tray, the inner ring of the storage tray is fixedly connected with a steel wire rope, the bottom end of the steel wire rope passes through the collecting cover located above, and is fixedly connected to the left and right sides of the top of the heat absorbing plate, the top surface of the collecting cover located above is hinged with a roller, the middle outer ring of the steel wire rope is rollingly connected to the inner cavity of the roller, and a motor is fixedly installed on the top of the collecting cover located above, the output shaft of the motor passes through the bracket and is fixedly connected to the axis core of the storage tray, the axis core on the other side of the storage tray is fixedly connected with a connecting rod, and the outer end of the connecting rod passes through the bracket.

[0017] In a preferred embodiment, six groups of the overall components and lifting components are provided, distributed on the front and rear sides of the machine body, wherein the connecting rod on one side is connected to the other two groups of lifting components on the side.

[0018] In a preferred solution, a protective cover is fixedly connected to the machine body in an area outside the hydraulic rod.

[0019] In a preferred solution, the collecting cover located at the top is provided with a protective cover at the outer edge of the bracket and the motor, wherein the protective cover located outside the motor is mounted on the protective cover located outside the bracket.

[0020] The technical effects achieved by the present invention are:

[0021] The transformer as a whole, the heat exchange component, and the heat dissipation component of the present invention can continuously cool the oil inside the transformer through the phase change material when in use, thereby ensuring the stable operation of the transformer. In daily use, after the transformer as a whole is in operation, its internal temperature rises, which drives the oil temperature to rise. Subsequently, the phase change material in the heat exchange component is melted by the heated oil and begins to continuously absorb heat. After one group of phase change materials is completely melted and completely absorbs heat, this group of phase change materials is brought into contact with the heat dissipation component, and the other group of phase change materials is brought into contact with the heat source inside the transformer as a whole to dissipate heat. After the phase change materials that are dissipating heat release the temperature and re-solidify, they wait for the subsequent heat dissipation process, thereby achieving continuous and stable heat dissipation of the oil inside the transformer and improving stability.

[0022] The integral assembly and lifting assembly of the present invention can cool the phase change material during daily use, and heat the phase change material in cold weather, thereby heating the interior of the transformer, thereby preventing damage to the internal components of the transformer due to excessively low temperatures. During daily use, the liquid in the heat dissipation assembly cools the phase change material after being cooled by the integral assembly. However, in cold weather, the driving portion of the lifting assembly drives the heat-absorbing portion of the integral assembly to rise, covering the integral assembly to absorb heat, causing the heat-conducting liquid flowing out of the heat dissipation assembly to absorb heat and heat up, and heat up the phase change material, causing it to melt. Subsequently, the liquid contacts the cooled transformer as a whole to condense and release heat, thereby heating the oil in the transformer, thereby preventing damage to the internal components of the transformer due to excessively low temperatures.

[0023] The overall assembly and lifting assembly of the present invention can provide certain protection for the overall assembly during sandstorms or typhoon weather to prevent external objects from damaging the pipelines on the overall assembly. When encountering severe weather and before the control circuit is about to be powered off, the driving part of the lifting assembly can be controlled to raise the heat-absorbing part of the overall assembly and cover the overall assembly. The heat-absorbing part can be used to protect the overall assembly to prevent flying rocks or external objects from damaging the pipelines of the overall assembly, so as to ensure that after the severe weather passes, the lifting assembly can be extended and the overall assembly can operate normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a structural diagram of the main components of the present invention;

[0026] Figure 3 is a schematic cross-sectional view of the transformer as a whole in the present invention;

[0027] Figure 4 is a schematic cross-sectional view of the heat dissipation assembly of the present invention;

[0028] Figure 5 It is a schematic diagram of the position of the heat exchange component in the present invention;

[0029] Figure 6 This is a diagram showing the separation of the accommodation tube and the first heat conducting plate in the present invention;

[0030] Figure 7 It is a schematic diagram of the position of the accommodation tube in the present invention;

[0031] Figure 8 is a schematic diagram of the connection between the accommodation tube and the second heat conducting plate in the present invention;

[0032] Figure 9 It is a schematic structural diagram of the overall components of the present invention;

[0033] Figure 10It is a schematic diagram of the position of the U-shaped groove in the present invention;

[0034] Figure 11 It is a structural schematic diagram of the lifting assembly in the present invention.

[0035] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0036] 10. Main assembly; 11. Transformer as a whole; 111. Machine body; 112. Containing cover; 113. First heat conducting plate; 12. Heat exchange assembly; 121. Moving tube; 122. Containing tube; 123. Push plate; 124. Hydraulic rod; 13. Heat dissipation assembly; 131. Feeding pipe; 132. Thermal cover; 133. Second heat conducting plate; 20. Temperature control assembly; 21. Overall assembly; 211. Collecting cover; 212. Heat conducting pipe; 213. U-shaped groove; 214. Heat absorbing plate; 22. Lifting assembly; 221. Bracket; 222. Storage tray; 223. Wire rope; 224. Roller; 225. Motor; 226. Connecting rod. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it constitute a separate or selective embodiment that is mutually exclusive of other embodiments.

[0040] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0041] Please see the attached Figures 1 to 11As shown, this embodiment provides a system design for cooling the oil temperature of a UHV transformer using phase change materials, including a main component 10, the main component 10 including a transformer body 11, a heat exchange component 12 is provided in the inner cavity of the transformer body 11, and a heat dissipation component 13 is connected to the outer side of the heat exchange component 12;

[0042] The temperature control component 20 includes an integral component 21 connected to the outside of the heat dissipation component 13, and a lifting component 22 is connected to the top of the integral component 21;

[0043] The overall component 21 is divided into two groups of states. In the first state, the transformer 11 operates normally, the heat exchange component 12 absorbs heat and transfers it to the heat dissipation component 13, and the heat is dissipated through the overall component 21.

[0044] In the second state: when the weather is cold, the lifting assembly 22 switches the entire assembly 21 to the second state, the entire assembly 21 absorbs heat, and introduces the heat into the transformer as a whole 11 through the heat exchange assembly 12.

[0045] It should be noted that the entire device cannot be installed on the ground or in a wide area of ​​the platform, so as not to affect the operation of the entire component 21 and the lifting component 22.

[0046] In this embodiment, during daily use, the transformer as a whole 11 generates heat during operation. At this time, the phase change material in the heat exchange component 12 absorbs heat and melts, continuously absorbing heat and cooling the temperature. Then, the driving portion of the heat exchange component 12 brings the phase change material into contact with the heat dissipation component 13, causing the heat-conducting liquid in the heat dissipation component 13 to cool down through the overall component 21. The phase change material solidifies after absorbing heat and waits to contact the heat source of the transformer as a whole 11 again, thereby achieving continuous and stable heat dissipation of the oil inside the transformer. In cold weather, the lifting component 22 drives the heat-absorbing portion of the overall component 21 to rise and covers the outer surface of the overall component 21. At this time, the overall component 21 absorbs heat and conducts heat to the phase change material through the heat exchange component 12, causing it to melt and absorb heat. The phase change material is then brought into contact with the interior of the transformer as a whole 11, condensing and releasing heat, thereby raising the temperature inside the transformer as a whole 11 to prevent damage to the internal components of the transformer due to excessively low temperature. In addition, the design of the overall component 21 and the lifting component 22 also takes into account the protection needs of severe weather, such as sandstorms or typhoons. The rising heat-absorbing part will cover the overall component 21, thereby protecting the pipelines on the overall component 21 from damage by external substances, to ensure that after the severe weather passes, the lifting component 22 will be extended and the overall component 21 can operate normally.

[0047] Next, please refer to Figures 1 to 8 The transformer as a whole 11 includes a body 111, a housing 112 is fixedly connected to the bottom of the inner cavity of the body 111, and first heat conducting plates 113 are fixedly connected to the front and rear sides of the inner cavity of the housing 112;

[0048] The heat exchange assembly 12 includes a movable tube 121 movably inserted into the outer groove of the first heat conducting plate 113. The side of the movable tube 121 facing the middle of the inner cavity of the body 111 is connected to the accommodating tube 122. The outer ring of the accommodating tube 122 is movably inserted into the outer groove of the first heat conducting plate 113. The upper and lower sides of the side of the movable tube 121 facing the outer side of the body 111 are fixedly connected to push plates 123. Through grooves are formed on the upper and lower sides of the left and right sides of the body 111, and the push plates 123 are slidably connected to the through grooves. Hydraulic rods 124 are fixedly installed on the upper and lower sides of the outer side of the body 111. The output end of the hydraulic rod 124 is fixedly connected to the inner cavity of the push plate 123.

[0049] The movable tube 121 and its corresponding receiving tube 122 and push plate 123 are provided in two groups, distributed on the left and right sides of the inner cavity of the body 111, and the receiving tubes 122 on both sides are cross-distributed and evenly sleeved in the outer groove of the first heat conducting plate 113;

[0050] The heat dissipation assembly 13 includes a feed pipe 131 connected to the upper and lower sides of the body 111. The front and rear sides of the inner cavity of the body 111 are fixedly connected to a heat conducting cover 132. The middle part of the heat conducting cover 132 is fixedly connected to a second heat conducting plate 133. The second heat conducting plate 133 is connected to the outer ring of the receiving tube 122.

[0051] A protective cover is fixedly connected to the body 111 in the area outside the hydraulic rod 124 to ensure the safety of the hydraulic rod 124, prevent it from being damaged, and facilitate maintenance.

[0052] It should be noted that the interior of the accommodating tube 122 and the moving tube 121 are filled with phase change material, and the material of the accommodating tube 122 and the moving tube 121 is the same as that of the first heat conducting plate 113 and the second heat conducting plate 133;

[0053] Among them, the melting point of the phase change material is about 40 degrees Celsius, and its ratio is:

[0054] Paraffin wax (n-tetradecane, melting point 42°C, and latent heat value ≥ 200kj / kg) 60%, expanded graphite 20%, silica gel 15%, flame retardant (aluminum hydroxide) 5%;

[0055] When the oil temperature in the transformer is above 40 degrees Celsius, the phase change material (paraffin) melts and absorbs heat. The thermal conductivity enhancement material (graphite) quickly conducts the heat of the transformer oil to the interior of the material to cool the oil temperature, while the silicone matrix prevents the melted material from being lost.

[0056] When the oil temperature is below 40 degrees Celsius, the phase change material changes from liquid to solid and begins to release heat to achieve temperature control;

[0057] The components inside the transformer and the insulating oil are placed in the containing cover 112, while the interior of the heat conducting cover 132 is filled with heat conducting liquid.

[0058] In this embodiment, during daily use, the components in the containment cover 112 generate heat and heat the insulating oil inside. At this time, the heat is transferred to the phase change material inside the containment tube 122 and the movable tube 121 through the first heat conducting plate 113, causing it to melt and begin to absorb heat, thereby reducing the oil temperature. After the phase change material absorbs heat to a certain extent, the hydraulic rod 124 pushes the movable tube 121 and the containment tube 122 to contact the thermal cover 132, and transfers the heat to the thermal conductive liquid inside the thermal cover 132 through the second heat conducting plate 133. At this time, due to hot and cold convection, the high-temperature liquid enters the overall component 21 through the feed pipe 131, while the low-temperature liquid in the overall component 21 flows back into the thermal cover 132, so that the phase change material can be circulated and cooled until solidified, waiting for the transformer oil to be cooled again, thereby achieving stable cooling of the transformer oil.

[0059] Next, please refer to Figures 9 to 11 The overall assembly 21 includes a collecting cover 211 connected to the outer end of the feed pipe 131. The adjacent sides of the upper and lower collecting covers 211 are connected to the heat pipe 212. The inner ring of the collecting cover 211 located at the lower end is provided with a U-shaped groove 213. The interior of the U-shaped groove 213 is slidably connected to a heat absorbing plate 214.

[0060] The lifting assembly 22 includes a bracket 221 fixedly connected to the top surface of the collecting cover 211 located above, the inner cavity of the bracket 221 is hinged with a storage tray 222, the inner ring of the storage tray 222 is fixedly connected to a steel wire rope 223, the bottom end of the steel wire rope 223 passes through the collecting cover 211 located above, and is fixedly connected to the left and right sides of the top of the heat absorbing plate 214, the top surface of the collecting cover 211 located above is hinged with a roller 224, the middle outer ring of the steel wire rope 223 is rollingly connected to the inner cavity of the roller 224, and a motor 225 is fixedly installed on the top of the collecting cover 211 located above, the output shaft of the motor 225 passes through the bracket 221 and is fixedly connected to the shaft core of the storage tray 222, the shaft core on the other side of the storage tray 222 is fixedly connected to a connecting rod 226, and the outer end of the connecting rod 226 passes through the bracket 221;

[0061] Six sets of the overall assembly 21 and the lifting assembly 22 are provided, distributed on the front and rear sides of the body 111. The connecting rod 226 on one side is connected to the other two sets of lifting assemblies 22 on the side, so that one set of motors 225 can drive the three sets of heat absorbing plates 214 to move up and down, saving costs.

[0062] The collecting cover 211 located above is provided with a protective cover on the outer edge of the bracket 221 and the motor 225, wherein the protective cover located outside the motor 225 is installed on the protective cover located outside the bracket 221 to prevent the motor 225 and the storage tray 222 from being damaged.

[0063] It should be noted that the material of the heat pipe 212 is the same as that of the first heat conducting plate 113 and the second heat conducting plate 133, and the heat pipe 212 is distributed in a fence shape, in order to facilitate the use of air to cool the heat conducting liquid in the heat pipe 212;

[0064] The heat absorbing plate 214 is made of black vacuum glass as a whole, and has multiple sets of heat absorbing films built in, and a solar selective absorption coating is set in the film (not shown in the figure, and this is a common technical structure in the prior art, such as a solar vacuum tube, but no further description is given), which is designed to absorb heat from sunlight to heat the heat-conducting liquid in the heat-conducting tube 212.

[0065] In this embodiment, in daily use, the heat-conducting liquid in the thermal cover 132 enters the collecting cover 211 and flows into the heat-conducting pipe 212, and the liquid is cooled by the flowing air. In cold or severe weather, when the temperature inside the transformer is too low, affecting the use effect of the internal components, the motor 225 runs, drives the storage tray 222 to rotate, and pulls the wire rope 223 upward. During the rising process, the wire rope 223 is stabilized by the roller 224. The rising wire rope 223 pulls the heat-absorbing plate 214 through the U-shaped groove 213 to cover the surface of the heat-conducting pipe 212, so that the heat-absorbing plate 214 absorbs heat from the sunlight and heats the heat-conducting pipe 212 and the liquid inside it. At this time, the movable tube 121 and the receiving tube 122 are attached to the surface of the second heat-conducting plate 133, and the high The warm liquid conducts heat into the phase change material, causing it to melt and absorb heat. Subsequently, the movable tube 121 and the receiving tube 122 are attached to the surface of the first heat conducting plate 113, causing the phase change material to solidify and conduct heat into the transformer oil. Once the internal temperature reaches a certain level, the heat absorbing plate 214 is immediately withdrawn and the transformer is switched to normal operating mode to cool the transformer, thereby achieving temperature control during use of the transformer, preventing damage to internal components caused by excessive temperature or excessive cold, which affects the service life. In addition, the raised heat absorbing plate 214 can protect the heat conducting pipe 212 in severe weather (such as typhoons), preventing damage to the heat conducting pipe 212 by flying rocks or other objects from the outside, ensuring that after the severe weather passes, when the heat absorbing plate 214 is lowered, the heat conducting pipe 212 and the transformer can operate normally, thereby improving safety.

[0066] The working principle of the present invention is as follows: during daily use, the components in the containing cover 112 generate heat and heat the insulating oil inside. At this time, the heat is transferred to the phase change material inside the containing tube 122 and the movable tube 121 through the first heat conducting plate 113, causing it to melt and begin to absorb heat, thereby reducing the oil temperature. After the phase change material absorbs heat to a certain extent, the hydraulic rod 124 pushes the movable tube 121 and the containing tube 122 to contact the heat conducting cover 132, and transfers the heat to the heat conducting liquid inside the heat conducting cover 132 through the second heat conducting plate 133. The high-temperature liquid flows into the heat conducting pipe 212 through the feed pipe 131 and dissipates heat through the air. The low-temperature liquid flows back into the heat conducting cover 132, circulating and cooling the phase change material, waiting for the transformer oil to be cooled again. In cold or bad weather, the motor 225 drives the storage tray 222 to rotate, pulling the wire rope 223 upward, pulling the heat absorbing plate 214 through the U-shaped groove 213 to cover the surface of the heat pipe 212 for protection and heat absorption, so that the heat absorbing plate 214 absorbs heat from the sunlight and heats the heat pipe 212 and the liquid inside it. At this time, the movable tube 121 and the receiving tube 122 are attached to the surface of the second heat conducting plate 133. The high-temperature liquid conducts heat into the phase change material, causing it to melt and absorb heat. Subsequently, the movable tube 121 and the receiving tube 122 are attached to the surface of the first heat conducting plate 113, causing the phase change material to solidify and conduct heat into the transformer oil. Once the internal temperature reaches a certain level, the heat absorbing plate 214 is immediately withdrawn and switched to normal operating mode to cool the transformer, thereby achieving temperature control during use of the transformer to prevent damage to internal components caused by excessive temperature or excessive cold, thereby affecting the service life.

[0067] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A system design for cooling the oil temperature of a UHV transformer using phase change materials, characterized by: include: A main body component (10), the main body component (10) includes a transformer as a whole (11), the transformer as a whole (11) includes a body (111), a heat exchange component (12) is provided in an inner cavity of the transformer as a whole (11), a heat dissipation component (13) is connected to the outer side of the heat exchange component (12), and the heat dissipation component (13) includes a feed pipe (131) connected to the upper and lower sides of the body (111); A temperature control component (20), the temperature control component (20) comprising an integral component (21) connected to the outside of the heat dissipation component (13), the top of the integral component (21) being connected to a lifting component (22); The overall component (21) is divided into two groups of states. In the first state, the transformer as a whole (11) operates normally, the heat exchange component (12) absorbs heat and transfers it to the heat dissipation component (13), and the heat is dissipated through the overall component (21); In the second state: when the weather is cold, the lifting component (22) switches the entire component (21) to the second state, the entire component (21) absorbs heat, and introduces the heat into the transformer as a whole (11) through the heat exchange component (12); The integral assembly (21) includes a collecting cover (211) connected to the outer end of the feed pipe (131), and adjacent sides of the upper and lower collecting covers (211) are both connected to a heat conducting pipe (212). The inner ring of the collecting cover (211) located at the lower side is provided with a U-shaped groove (213), and the interior of the U-shaped groove (213) is slidably connected to a heat absorbing plate (214); The lifting assembly (22) includes a bracket (221) fixedly connected to the top surface of the collecting cover (211) located above, the inner cavity of the bracket (221) is hinged with a storage tray (222), the inner ring of the storage tray (222) is fixedly connected with a steel wire rope (223), the bottom end of the steel wire rope (223) passes through the collecting cover (211) located above, and is fixedly connected to the left and right sides of the top of the heat absorbing plate (214), and the top surface of the collecting cover (211) located above is hinged. There is a roller (224), the outer ring of the middle section of the steel wire rope (223) is rollingly connected to the inner cavity of the roller (224), and a motor (225) is fixedly installed on the top of the collecting cover (211) located above, and the output shaft of the motor (225) passes through the bracket (221) and is fixedly connected to the shaft core of the storage tray (222), and the shaft core on the other side of the storage tray (222) is fixedly connected to a connecting rod (226), and the outer end of the connecting rod (226) passes through the bracket (221).

2. The system design for cooling the oil temperature of a UHV transformer using phase change materials according to claim 1 is characterized in that: The bottom of the inner cavity of the machine body (111) is fixedly connected to a containing cover (112), and the front and rear sides of the inner cavity of the containing cover (112) are both fixedly connected to first heat conducting plates (113).

3. The system design for cooling the oil temperature of a UHV transformer using phase change materials according to claim 2 is characterized in that: The heat exchange assembly (12) includes a movable tube (121) movably inserted into the outer groove of the first heat conducting plate (113), and the side of the movable tube (121) facing the middle of the inner cavity of the body (111) is connected to the accommodating tube (122). The outer ring of the accommodating tube (122) is movably inserted into the outer groove of the first heat conducting plate (113). The upper and lower sides of the side of the movable tube (121) facing the outer side of the body (111) are fixedly connected to the push plates (123). The upper and lower sides of the left and right sides of the body (111) are provided with through grooves, and the push plates (123) are slidably connected in the through grooves. The upper and lower sides of the outer side of the body (111) are fixedly installed with hydraulic rods (124), and the output end of the hydraulic rod (124) is fixedly connected to the inner cavity of the push plate (123).

4. The system design for cooling the oil temperature of a UHV transformer using phase change materials according to claim 3 is characterized in that: The movable tube (121) and its adapted accommodating tube (122) and push plate (123) are provided in two groups, distributed on the left and right sides of the inner cavity of the machine body (111), and the accommodating tubes (122) on both sides are cross-distributed and evenly sleeved in the outer groove of the first heat conducting plate (113).

5. The system design for cooling the oil temperature of a UHV transformer using phase change materials according to claim 3 is characterized in that: A heat conducting cover (132) is fixedly connected to both the front and rear sides of the inner cavity of the machine body (111), a second heat conducting plate (133) is fixedly connected to the middle of the heat conducting cover (132), and the second heat conducting plate (133) is in contact with the outer ring of the accommodating tube (122).

6. The system design for cooling the oil temperature of a UHV transformer using phase change materials according to claim 1 is characterized in that: The overall assembly (21) and the lifting assembly (22) are each provided in six groups, distributed on the front and rear sides of the machine body (111), wherein the connecting rod (226) on one side is connected to the other two groups of lifting assemblies (22) on the other side.

7. The system design for cooling the oil temperature of a UHV transformer using phase change materials according to claim 3 is characterized by: The machine body (111) is fixedly connected to a protective cover in an area outside the hydraulic rod (124).

8. The system design for cooling the oil temperature of a UHV transformer using phase change materials according to claim 1 is characterized in that: The collecting cover (211) located above is provided with a protective cover on the outer edges of the bracket (221) and the motor (225), wherein the protective cover located outside the motor (225) is mounted on the protective cover located outside the bracket (221).

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